US Bridges

N Jackson DR over Rock CR

Good

Clay County, Missouri · S 29 T 51 N R 32 W · Structure no. 34367

Built
1980
45 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
37 ft
2 main spans
Daily traffic
2,714
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Jackson DR over Rock CR is a concrete continuous culvert carrying N Jackson DR over Rock CR in Clay County, Missouri. It was built in 1980, so it is 45 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,714 vehicles a day, roughly 5% of them trucks, projected to reach 4,342 by 2044. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN Jackson DR
CrossesRock CR
LocationS 29 T 51 N R 32 W
RouteCity Street 0
Coordinates39.1978, -94.52976
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.8 US tons
Inventory rating15.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,714 (2024)
Projected traffic4,342 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Jackson DR over Rock CR built?

It was built in 1980, making it 45 years old in 2025.

What condition is N Jackson DR over Rock CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does N Jackson DR over Rock CR carry?

About 2,714 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is N Jackson DR over Rock CR?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.5 m).

Who owns N Jackson DR over Rock CR?

It is owned by the City or Municipal Highway Agency.